Auto-injector



FIG. 1 is a front perspective view of an auto-injector embodying the principles of my new design;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof.

FIG. 5 is a side view thereof, the opposite side being a mirror image thereof; and,

FIG. 6 is a top view thereof, the bottom view being a mirror image thereof.

The broken line showing is for purposes of illustrating portions of the article and forms no part of the claimed design. The broken line which defines the bounds of the claimed design forms no part thereof. 

The ornamental design for an auto-injector, as shown and described. 